Update npm-publish.yml

Author: ninenine

.github/workflows/npm-publish.yml

@@ -17,22 +17,29 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [12.x, 14.x, 16.x]
+        
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+      - uses: actions/setup-node@v3
         with:
-          node-version: 12
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
       - run: npm ci
       - run: npm test
 
   publish-npm:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 12
+          node-version: 16.x
+          cache: 'npm'
           registry-url: https://registry.npmjs.org/
       - run: npm ci
       - run: npm publish